badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 10

                        

The man in Fig. weighs 180 lb; the platform and attached frictionless pulley weigh a total of 43 lb. Ignore the weight of the rope. With what force must the man pull up on the rope in order to lift himself and the platform upward at 1.2 ft/s 2 ?

5 years ago

Answers : (1)

Jitender Pal
askIITians Faculty
365 Points
							The combined weight of the system is the sum of the weight of the man and the weight of the platform, that is
W2 = W1 +weight of platform
235-67_1.PNG
Therefore, the combined weight of the man-platform system is 223 lb.
The combined mass of the man-platform system is,
235-1525_1.PNG
Here g is the magnitude of acceleration due to gravity.
235-824_1.PNG
Therefore the combined mass of the man-platform system is 100.9 kg.
235-1809_1.PNG
Therefore, the force exerted by the man to lift the platform is 1,027 N .
5 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details